-2.23% is the change from 853 to 834
Calculation steps:
[( 834 - 853 ) ÷ 853] x 100 = -2.23%
Formula
Percentage change = [(834 - 853) / 853] x 100
Subtract the new number by the original number
834 - 853 = -19
-19 ÷ 853 = -0.022274325908558032
-0.022274325908558032 x 100 = -2.23%